G+1 button on your website.
 

https://youtube.com/watch?v=XvJrfwuIRa4

This is another reason why i hate social networks.... everytime a new one pops up you're expected to put all their fucking icons in your site. It's rediculous. Also you need to add code if you want the content someone shares on google+ to show on their page the way you want it to. Cant all those crappy social network sites use one universal button, without adding codes etc?

Sure. Competitors are always working together to make sure you know who "the other guy" is and they always encourage you to use them too.

What do you think the Pepsi Challenge was all about? They just wanted to make sure their buyers knew of other options as well as how tasty the others are.

just go buy a bunch of +1's. you can get them cheap.